code: def test_delannoy_numbers(self, m, n):
      expected_values = np.array([1, 3, 5, 7, 9, 11, 13, 15, 17])
      assert VonNeumann.delannoy(m, n) in expected_values
  
file_path: pyswarms/tests/backend/topology/test_von_neumann.py
imports: import numpy
  import pytest
  from pyswarms.backend.topology import VonNeumann
  from .abc_test_topology import ABCTestTopology
label_desc: Use image node_id 4 for calling the TestVonNeumannTopology obj's underlying member method code with example usage: obj.test_delannoy_numbers(m, n) without return types